ZoneAlarm: Free Firewall Software
Zone Alarm is an easy to use firewall blocks hackers and other unknown threats.
**FREE DOWNLOAD (v3.1)**
File Size: 6.32MB | Safe & Verified
Utility
Security
Freeware
Key Features
- Zone Alarm Intrusion Blocking systematically identifies hackers and blocks access attempts.
- Stealth Mode automatically makes your computer invisible to anyone on the Internet.
- Automatic Program Configuration provides safety and simplicity by automatically configuring programs.
- Automatically decides whether to allow or deny Internet access to individual programs.
- Expert Controls give savvy users precise control over security settings.
Technical Specifications
- **Publisher:** https://www.zonealarm.com
- **License:** Freeware
- **Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
- **Last Updated:** October 15, 2025
- **Category:** Internet / Security
User Rating
Based on 472 reviews.